Separation of tramp or stray iron and the like impurities from bagasse and other materials of similar consistency



Jan. 15, 1935. F. M AXWELL SEPARATION OF TRAMP OR STRAY IRON AND THE LIKE IMPURITIES FROM BAGASSE AND OTHER MATERIALS OF SIMILAR CONSISTENCY Filed Oct. 31, 1952 INVENTOR FRANCIS MAXWELL,

ATTORNEYS Patented Jan. 15, 1935 UNITED STATES PATENT OFFICE Francis Maxwell, Westminster, London, England Application October 31, 1932, Serial No. 640,486

In Great Britain It 1 Claim.

This invention relates to the separation of tramp or stray iron and the like impurities from bagasse and other materials of like consistency.

Hitherto in attempts made to remove tramp or stray iron from bagasse in cane milling it has been proposed to employ magnetic means direct on the bagasse in which the iron is, embedded. But owing to the great expense entailed by maintaining the current and so on, these methods are not economical.

Now in accordance with this invention I provide apparatus for removing tramp or strayiron or impurity from bagasse and other material of like consistency comprising means for loosening and/or scattering the material, a screen device having a breakable pivoted screen for treating differentially the material and the impurity, the screen being penetrable by the impurity, and means for adjusting the .screen in position relative to the usual direction of the stream of material treated.

The invention also consists in the apparatus for carrying out the method in accordance with this invention as hereinafter described and claimed. v

Figs. 1 and 2 of the accompanying drawing illustrates in diagrammatic sectional elevation two forms of device made in accordance with this invention.

In one way of carrying out my invention as illustrated in Fig. 1 as applied to a crushing or shredding machine 2 in order to remove the tramp or stray iron or the like from bagasse, as the bagasse comes from the crushing or shredding rolls 3, I break up or scatter the bagasse 4 by a rotary scatterer 5 or the like disposed in its path and project the stream of scattered bagasse 4 or the like onto or towards a screen 6, which may be of glass, celluloid or other suitable ma- August '11, 1932 terial. The screen is secured to a receptacle '7 behind it, and is pivoted to the machine or conveyor frame at'8 and counter-balanced by a weight 9'to facilitate the removal of stray or tramp iron from the receptacle '7 when desired. The screen 6' is penetrable by the tramp iron 10 orthe like but sufliciently strong to deflect the bagasse or like particles, so that the bagasse or the likeis deflected and is conveyed away by a conveyor 11. The distance of the screen 6 from rollers 3 is adjustable by a slide 12.

In operation the tramp or stray iron 10 or the like breaks through the screen 6 and is caught or retained in thereceptacle 7 which is suitably disposed behind the screen for that purpose. Depending upon the nature of the bagasse or the like the screen 6 may by means of slide 12 be placed at such a distance from the rotary scatterer 5 that the bagasse'4 or'the like does not necessarily come into impact with the screen though the iron 10 does so.

As illustrated in Fig. 2, the rotary scatterer is replaced by a steam or air jet or like scatterer l3,

which breaks up or separates the bagasse. I In operation the action of the screen 6 is substantially the same on the bagasse 4 as on the previous example; the tramp iron or the like being caught in the receptacle 7; and the bagasse conveyed away by a conveyor 11.

What Iclaim and desire to secure by Letters 1 Patent is:-- 

